OK, let's work through this together. We're starting with 133 and we're going to multiply it by 73, which means we add 133 to itself 73 times.
Step 1: 0 + 133 = 133
Step 2: 133 + 133 = 266
Step 3: 266 + 133 = 399
Step 4: 399 + 133 = 532
Step 5: 532 + 133 = 665
Step 6: 665 + 133 = 798
Step 7: 798 + 133 = 931
Step 8: 931 + 133 = 1064
Step 9: 1064 + 133 = 1197
Step 10: 1197 + 133 = 1330
Step 11: 1330 + 133 = 1463
Step 12: 1463 + 133 = 1596
Step 13: 1596 + 133 = 1729
Step 14: 1729 + 133 = 1862
Step 15: 1862 + 133 = 1995
Step 16: 1995 + 133 = 2128
Step 17: 2128 + 133 = 2261
Step 18: 2261 + 133 = 2394
Step 19: 2394 + 133 = 2527
Step 20: 2527 + 133 = 2660
Step 21: 2660 + 133 = 2793
Step 22: 2793 + 133 = 2926
Step 23: 2926 + 133 = 3059
Step 24: 3059 + 133 = 3192
Step 25: 3192 + 133 = 3325
Step 26: 3325 + 133 = 3458
Step 27: 3458 + 133 = 3591
Step 28: 3591 + 133 = 3724
Step 29: 3724 + 133 = 3857
Step 30: 3857 + 133 = 3990
Step 31: 3990 + 133 = 4123
Step 32: 4123 + 133 = 4256
Step 33: 4256 + 133 = 4389
Step 34: 4389 + 133 = 4522
Step 35: 4522 + 133 = 4655
Step 36: 4655 + 133 = 4788
Step 37: 4788 + 133 = 4921
Step 38: 4921 + 133 = 5054
Step 39: 5054 + 133 = 5187
Step 40: 5187 + 133 = 5320
Step 41: 5320 + 133 = 5453
Step 42: 5453 + 133 = 5586
Step 43: 5586 + 133 = 5719
Step 44: 5719 + 133 = 5852
Step 45: 5852 + 133 = 5985
Step 46: 5985 + 133 = 6118
Step 47: 6118 + 133 = 6251
Step 48: 6251 + 133 = 6384
Step 49: 6384 + 133 = 6517
Step 50: 6517 + 133 = 6650
Step 51: 6650 + 133 = 6783
Step 52: 6783 + 133 = 6916
Step 53: 6916 + 133 = 7049
Step 54: 7049 + 133 = 7182
Step 55: 7182 + 133 = 7315
Step 56: 7315 + 133 = 7448
Step 57: 7448 + 133 = 7581
Step 58: 7581 + 133 = 7714
Step 59: 7714 + 133 = 7847
Step 60: 7847 + 133 = 7980
Step 61: 7980 + 133 = 8113
Step 62: 8113 + 133 = 8246
Step 63: 8246 + 133 = 8379
Step 64: 8379 + 133 = 8512
Step 65: 8512 + 133 = 8645
Step 66: 8645 + 133 = 8778
Step 67: 8778 + 133 = 8911
Step 68: 8911 + 133 = 9044
Step 69: 9044 + 133 = 9177
Step 70: 9177 + 133 = 9310
Step 71: 9310 + 133 = 9443
Step 72: 9443 + 133 = 9576
Step 73: 9576 + 133 = 9709

So, 133*73 = 9709